One whom says incredibly and impossible bitchy situational things that ironically come true and ruin lives only to leave the victim of the defined confused by the coinsidence.

"Pulling The Shannon"

The person who is being deemed having pulled "The Shannon" must have said something incredibly mean, such as "you have an old dog anyways maybe you should just put it to sleep."
And then having to put your dog to sleep two days later due to "freak accident."

The girl in your town that is known as the slut of the county and likes literally any aged man to cum inside her hoo-ha

"Hey, is that The Shannon of the town?"
"Yeah, I heard she lets 35 year old men fuck her."
"I know her sister; she told me that she tried get up on her boyfriend's dick."
"How old was he?"
"32,"
"Jesus..."